Editing Cancer (section)

=== Metastasis ===
{{Main|Metastasis}}
[[Metastasis]] is the spread of cancer to other locations in the body. The dispersed tumors are called metastatic tumors, while the original is called the primary tumor. Almost all cancers can metastasize.<ref name=metastasis/> Most cancer deaths are due to cancer that has metastasized.<ref name="What is Metastasized Cancer"/>

Metastasis is common in the late stages of cancer and it can occur via the blood or the [[lymphatic system]] or both. The typical steps in metastasis are local [[Invasion (cancer)|invasion]], [[intravasation]] into the blood or lymph, circulation through the body, [[extravasation]] into the new tissue, proliferation and [[angiogenesis]]. Different types of cancers tend to metastasize to particular organs, but overall the most common places for metastases to occur are the [[lung]]s, [[liver]], brain and the [[bone]]s.<ref name=metastasis/>